Cressi-sub Ellipse Black Balanced User manual

Regulators repair and maintenance
January 2011 Rev. Ell.B.B. / 1 Ed. B /12 1
2nd stage Ellipse Black
Balanced

Regulators repair and maintenance
January 2011 Rev. Ell.B.B. / 1 Ed. B /12 2
2nd stage Ellipse Black
Balanced
WARNING!
•This manual is intended for use by expert technicians who have already received
training in equipment repairs and maintenance from Cressi-sub.
•This manual is intended for use by expert technicians who have already received
training in equipment repairs and maintenance from Cressi-sub.
•Avoid performing maintenance and/or repair operations on the equipment without
the proper training required to conduct these operations.
•Users must never perform maintenance themselves; all maintenance must be
performed EXCLUSIVELY by an authorized Cressi-Sub center.
•If the information provided in this document is unclear or not fully intelligible,
please contact Cressi-sub before proceeding with any disassembly or maintenance
procedures.
•Before proceeding, Cressi-sub recommends that you read the following document
carefully to familiarize yourself with all the tools and techniques needed to
perform proper equipment maintenance and/or repair.
•Use this document as a guide during the various steps of maintaining and/or
repairing the equipment.

Regulators repair and maintenance
January 2011 Rev. Ell.B.B. / 1 Ed. B /12 3
2nd stage Ellipse Black
Balanced
WARNING!
•All operations must be done strictly in the order provided in this document. Failure
to do so could cause the equipment to function poorly, or worse, result in an
accident.
•To prevent any assembly errors when performing maintenance and/or repairs, we
recommend using all the replacement parts provided by Cressi-Sub in every
operation.
•Pay special attention to the recommendations provided in the margin of the figures
that show the various sequences of equipment maintenance and/or repair in order
to avoid any problems that could result in an accident.
•The document below in no way replaces the equipment's instruction manual.
•The procedures described in this document are pertinent to and intended only for
the disassembly, maintenance, and assembly of equipment meant for use with air
(21% oxygen, 79% nitrogen).
•The instructions provided in this document are based on information referring to the
most update equipment available. Cressi Sub reserves the right to make changes at
any time.

Regulators repair and maintenance
January 2011 Rev. Ell.B.B. / 1 Ed. B /12 4
2nd stage Ellipse Black Balanced:
spare parts
Ellipse Balanced/Ellipse Black Balanced 2nd stages (hz 820080) ANNUAL REPLACEMENT KIT CHART (Real Size)

Regulators repair and maintenance
January 2011 Rev. Ell.B.B. / 1 Ed. B /12 5
2nd stage Ellipse Black
Balanced
•Kit Ellipse Balanced/Ellipse Black Balanced
Manutenzione Annuale
•Cod. N°HZ 820080
(Real Size)
Torna
•Use only original Cressi-sub spare parts
•Note: it is recommended to carry out a complete servicing of the
regulator yearly or more frequently in case of intensive use.

Regulators repair and maintenance
January 2011 Rev. Ell.B.B. / 1 Ed. B /12 6
2nd stage Ellipse Black
Balanced
•Annual replacement
•Cressi-Sub recommends complete regulator maintenance at least once a year,
or more frequently in the case of particularly intense use.
•Maintenance must include replacement of all components provided in the
annual equipment maintenance kit.
•The special tools for maintenance of this equipment are illustrated in a section
of this document on page 8.
•Metal parts must be washed with hot water and neutral detergent and rinsed
in fresh water. Any concretions must be removed using ultrasound cleaning or
with diluted acid solutions, always followed by long and thorough rinsing
under running water.
•Do not use acids or solvents on rubber components.
•The new ORs must be greased with a thin layer of silicon grease: this
procedure reduces to a minimum the risk of damage during assembly.
•The metal threading can be lubricated with grease on the first two rings of
threading.

Regulators repair and maintenance
January 2011 Rev. Ell.B.B. / 1 Ed. B /12 7
2nd stage Ellipse Black
Balanced
•Use only original Cressi-sub spare parts
•The procedures described in this document are pertinent to and
intended only for the disassembly, maintenance, and assembly of
equipment meant for use with air (21% oxygen, 79% nitrogen).
•Users must never perform maintenance themselves; all
maintenance must be performed EXCLUSIVELY by an authorized
Cressi-Sub center.
•You can find your authorized Cressi-Sub center by asking your
dealer, or Cressi Sub S.p.A. itself by sending an e-mail to:
[email protected]
•Annual replacement

Regulators repair and maintenance
January 2011 Rev. Ell.B.B. / 1 Ed. B /12 8
2nd stage Ellipse Black Balanced
Special tools

Regulators repair and maintenance
January 2011 Rev. Ell.B.B. / 1 Ed. B /12 9
2nd stage Ellipse Black Balanced:
disassembling
•Remove and replace all O-rings;
•Use a plastic tool or a round pointed metal one in order not to damage the
O-ring seat;
•To replace the O-ring correctly, press its sides to create a bulge inside which
to insert the round pointed tool, as shown in the pictures;
•Attention: USE ONLY ORIGINAL CRESSI-SUB SPARE PARTS

Regulators repair and maintenance
January 2011 Rev. Ell.B.B. / 1 Ed. B /12 10
2nd stage Ellipse Black Balanced:
disassembling
•Use a 0,75 in. and a 0,67 in.
spanner to remove the low
pressure hose, holding the lock
nut steady with the former and
unscrewing the hose with the
latter;
•By annual replacement it is
necessary to replace the O-
rings inside the hose;
•Check the low pressure hose
for visible signs of wear, cuts or
abrasions, especially next to
the threaded connecting parts.
•Remove the low pressure hose

Regulators repair and maintenance
January 2011 Rev. Ell.B.B. / 1 Ed. B /12 11
HZ 810077
2nd stage Ellipse Black Balanced:
disassembling
0,15 in. Allen wrench
•Cam-lock –Disassembling the regulator
•Insert a 0,15 in. Allen wrench into the cam-lock seat, press
gently and turn by 90 degrees anticlockwise. The inner spring
will push the key outwards, and you will be able to take it out
easily.

Regulators repair and maintenance
January 2011 Rev. Ell.B.B. / 1 Ed. B /12 12
•After removing the cam-lock key, press the soft cap with your
fingers while levering on the baffle middle port, so as to open it,
as shown in the picture.
2nd stage Ellipse Black Balanced:
disassembling

Regulators repair and maintenance
January 2011 Rev. Ell.B.B. / 1 Ed. B /12 13
•Open the cap, holding the
regulator casing in your hand,
and remove the soft cap
(button), the diaphragm ring
and the diaphragm.
2nd stage Ellipse Black Balanced:
disassembling

Regulators repair and maintenance
January 2011 Rev. Ell.B.B. / 1 Ed. B /12 14
HZ 820074
HZ 820072 HZ 820073
2nd stage Ellipse Black Balanced:
disassembling

Regulators repair and maintenance
January 2011 Rev. Ell.B.B. / 1 Ed. B /12 15
•Use an adjustable wrench
to loosen the side cap and
unscrew it slightly.
HZ 820085
HZ 709013
2nd stage Ellipse Black Balanced:
disassembling

Regulators repair and maintenance
January 2011 Rev. Ell.B.B. / 1 Ed. B /12 16
Ch.19
•Use a 0,75 in. spanner to remove the regulator lock nut.
HZ 820050
2nd stage Ellipse Black Balanced:
disassembling

Regulators repair and maintenance
January 2011 Rev. Ell.B.B. / 1 Ed. B /12 17
1
2
•Bend the lever (phase 1) and take the whole second stage
mechanism out of the case (phase 2), as shown in the picture,
then remove the valve body O-ring.
2
HZ 820051
2nd stage Ellipse Black Balanced:
disassembling

Regulators repair and maintenance
January 2011 Rev. Ell.B.B. / 1 Ed. B /12 18
•Take the baffle out of the case, pushing its ends as shown in
the picture, then remove the discharge valve out of its seat.
HZ 820078
HZ 810074
2nd stage Ellipse Black Balanced:
disassembling

Regulators repair and maintenance
January 2011 Rev. Ell.B.B. / 1 Ed. B /12 19
•Remove the side cap unscrewing it fully; remove the valve
body spacer.
HZ 820085
HZ 820083
2nd stage Ellipse Black Balanced:
disassembling

Regulators repair and maintenance
January 2011 Rev. Ell.B.B. / 1 Ed. B /12 20
•Use the tool HZ 709011 to remove the piston including spring and
balancing chamber out of the valve body, as shown in the picture;
•NOTE: push with a certain amount of strength to overcome the
friction induced by the balancing chamber O-ring onto the valve
body side, until the whole valve comes out.
2nd stage Ellipse Black Balanced:
disassembling